Ribbon cassette for typewriter



FIG. 1 is a top plan view of ribbon cassette for typewriter showing our new design;

FIG. 2 is a front elevation of the same;

FIG. 3 is a bottom plan view of the same;

FIG. 4 is a rear elevation of the same;

FIG. 5 is a left side elevation of the same;

FIG. 6 is a right side elevation of the same;

FIG. 7 is an enlarged partial sectional view of the same taken along line A--A of FIG. 1;

FIG. 8 is an enlarged partial sectional view of the same taken along line B--B of FIG. 1; and

FIG. 9 is a perspective view of the same. 

The ornamental design for ribbon cassette for typewriter, substantially as shown and described. 